I have a house full of books. They're not for me to keep, mostly. They're for scanning and redistribution to you. That's what the Public Domain means. They're yours. And if you want to do some of that yourself, try Distributed Proofreaders today.
Lately there have been an increase in images posted that were not made with Processing. While many of these images are interesting, it confuses the concept of the group. Please keep the images related to Processing, there are other general-purpose groups for computer-generated imagery.